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Posted by: Slinger
I had a speedo on mine but it flew off. Oh, well. I did pass a Harley once while riding on mine. Wasn't all that hard to do now that I think about it. That's one for the rice-burners.
Posted by: maddog56
Actually the conversion factor is around 1.75:1, meaning that a two stroke is comparable to a four stroke with a displacement 1.75 times larger than its own. When you calculate it you realize the foundation for the original 440cc four stroke limit in racing for the 250 class is based on this.
Posted by: maddog56
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Originally posted by: Raptor660Rshee350
Ive seen DirtWheels tests and other magazine tests. The top speed is in the 77-82 range.
Really? Because the latest issue of ATV sport did a piece on the old LT250R and LT500R and they said the top speed of the zilla was 76mph, right on the spec sheet.
Page 63 for those of you who have the November issue.
Posted by: maddog56
First off I dont ever quote dirtwheels, I'm not even saying this magazine is right. I'm just saying that not all magazines claim outrageous speeds. Second, how could 76 be way off but the 77 and up range is ok? And its not a vintage magazine, its the November 2005 issue of atv sport quoting the March 1985 issue of "3 Wheeling" Magazine.
Most of all, why do people care so much? Not only is a stock zilla in good shape hard to find, but finding someone to risk the top end by winding it out for a mile to reach top speed is downright impossible. Unless its a kid without a clue who owns the bike, then they're abundant just like in this forum.
Posted by: maddog56
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Originally posted by: raptor6
My raptor has no problems with a stock zilla
Then you have some internal work done, because even a piped raptor wont consistantly beat a stock zilla.
Posted by: maddog56
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Originally posted by: Raptor660Rshee350
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Originally posted by: raptor6
My raptor is piped amd jetted and I can beat a stock zilla,but I never raced a pipe zilla.
ehh, I dont know about that.
hr>
I'm guessing special circumstances if it actually happened. And just because you beat him once doesnt mean you're faster, its when you can repeat such a win over and over again with multiple different competitors.
Posted by: maddog56
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Originally posted by: Sandro
On atv sports latest magazine it has a whole 6 pages the zila and the top speed is 76mph. the pages are from 58 to 63 the top speed is on page 63. its the november mag.
Yep, thanks for confirming my story. Of course I dont think anyone should listen to the magazines for this type of info, but if you are going to cite them you should do it accurately.
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Originally posted by: maddog56
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Originally posted by: Raptor660Rshee350
Ive seen DirtWheels tests and other magazine tests. The top speed is in the 77-82 range.
Really? Because the latest issue of ATV sport did a piece on the old LT250R and LT500R and they said the top speed of the zilla was 76mph, right on the spec sheet.
Page 63 for those of you who have the November issue.
Posted by: ShadyRascal
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Originally posted by: SJ
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Originally posted by: Raptor660Rshee350
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Originally posted by: SJ
Raptor660Rshee350, How and the hell do you get to the spark plugs in that Camaro. That engine compartment is STUFFED.
hehe, you need a damn lift.
I can believe that.hr>
I built a couple of big block 66 Fairlane GTA's in the past. If you've ever messed with 60's Fords with the dumb intrusive spring tower front suspension you will have empathy. Changed plugs right at the dragstrip after driving out there once, engine was hot etc. Almost had to have all my fingers amputated.
Posted by: lt500abuser
if your a fast rider then it's fast, if your slow poke sh!t talker your going to get smoked.!!
Posted by: rooster123
You have to know how to kick it. I can start mine in tennis shoes. Unless you have extensive cylinder work the banshee doesnt even come close in power. Look at my picture page and tell me what you think.
Posted by: emeraldisleatv
YES of course because i own one! LOL. But really they are the fastest production atv. Not bad for a 18year old machine eh?
Posted by: emeraldisleatv
The zilla has some reliability issues. The 87 model was prone to blowing head gaskets, this is fixed by putting bigger studs in the head(this is why the 88-90 models have 7 cylinder studs) The are prone to blowing the base gasket under the reed cage, the gasket life can be increases by putting a stronger gasket and some instant gasket , The main bearings are prone to spin in the cases this is fixed by having the cases machined and inserts put in around the bearings. I think thats it, but once these are all solved they are reliable.
Don't forget if you compare a 500cc two stroke to a 1000cc 4stroke that 1000cc 4 stroke would have to be a single cylinder, but thats not possible it would probably be a 4 cylinder therefore making it more powerful tha 500cc 2 stroke single cylinder.
Posted by: emeraldisleatv
Top speed stock around 84mph. But they can make higher speeds with littel mods and gearing. I never had mine flat out ( not enough area) so I cant say what mine would make.
Posted by: emeraldisleatv
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Originally posted by: maddog56
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Originally posted by: Raptor660Rshee350Ive seen DirtWheels tests and other magazine tests. The top speed is in the 77-82 range.
Really? Because the latest issue of ATV sport did a piece on the old LT250R and LT500R and they said the top speed of the zilla was 76mph, right on the spec sheet.Page 63 for those of you who have the November issue.
That figure is definetly way off, that dirtwheels is def not accurate. Do a search for fastest stock quad, the zilla will pop up every time and the speeds mention are usually in the 80's
Posted by: emeraldisleatv
I'm not trying to be aggeressive here, sorry if I came across like that. Top speeed is not a major factor where I ride eithre its the acceleration that counts for me (still i get speeds of 70mph) but usually with more acceleration comes more top speed. But to say 76mph is the top speed wouldn't make the zilla the fastest the ds650 and 700r would be right up there.
Posted by: emeraldisleatv
Is you'r rappy stock and are the zillas runnin fresh top ends?
Posted by: emeraldisleatv
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Originally posted by: raptor6
Raced 5-7 times in 600ft....me beating him by 3 bikes.
Maybe he can't ride the thing, try and swap riders.
Posted by: emeraldisleatv
Good points. You put a lot of thought into that post.LOL
Posted by: yagerzzz
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Originally posted by: 4wheelinatvrider
Is the zilla the fastest Quad ever?????? Acceleration and top speed
Yes and yes.
Posted by: yagerzzz
For those of you who don't have a lot of vintage magazines, check this thread out. Scroll down a bit and 2stroke4ever posted all of the top speeds and drag times for the race quads from a June 88 issue of 3&4 wheel action. The Zilla's top speed was just over 79.
http://forums.atvconnection.com/messageview.cfm/catid/16/threadid/463549.cfm
Posted by: yagerzzz
For what it's worth...
Everyone who says you can't rely on what magazines print is absolutely correct. For example, not too long ago one of my magazines (I believe it was 4 Wheel ATV Action) had a great article on the old quadracers - both the LT250 and the LT500, and even though it was a good article overall, there where at least a couple typos that I found. 1) It listed the zilla's dry weight at 362 lbs. Every diehard zilla fan knows the claimed dry weight was 392 lbs every year of production. 2) In the body of the article itself, it refers to the LT500 having an "air cooled" 500 cc motor. Even non-diehard fans know that's a mistake. I'm just posting this to show a concrete example of a magazine getting the facts wrong. If someone knows the exact publication and issue that I'm talking about, please list it. (I know it was either 4 Wheel ATV Action or ATV Sport)
That being said, 3&4 Wheel Action did an article in the June '88 issue testing top speed and acceleration that's pretty definitive, and they conducted the test very professionally. They used a radar gun and computer time slips on a professional drag strip. Each quad was ran 4 times to weed out any driver error. They even checked the PSI in the tires and listed the wind conditions and rider weight. It was probably the most objective article they ever wrote comparing sport quads. There wasn't much opinion stated, simply the facts and the outcomes. I guess they could have lied and fabricated the whole story, but they sure went through a lot of trouble to sound believable!
To judge for yourself, here is a link to a reprint of that article: http://www.geocities.com/Baja/Dunes/6243/articles.htm (Click on the link under "Super Speed Shootout".) In the original magazine, there was an additional side bar that listed the times and speeds of all the machines in the test. This article only mentions the top couple in each category. The zilla had the fastest top speed of 79.22 mph and the quickest 1/4 mile. The Banshee had the quickest 60 ft times.
If you read this article, I think it's quite a bit more convincing than the article written in ATV Sport magazine that casually mentions the top speed being 76... especially considering ATV Sport magazine wasn't even around when the Zilla was produced!
Also, just to give everyone something else to think about, this test was done using all '88 models. The '87 model year LT500 had a more powerful engine (mostly due to the much larger intake) and faster internal gearing than the '88-90 zilla's. Had they used an '87 zilla, the top speed could have been a few mph faster. (I say "could" only because they geared the '87 a little slower with sprockets so I'm not sure if they had a faster overall gearing.)
Either way, the top speed of a stock 500 was still only 2-3 mph faster than the Banshee. That's nothing to write home about. But eveyone that's ever driven a "Fresh" LT also knows that it's playing at it's top speed and could pull quite a bit higher gearing in most flat terrain (sand being a noteable exception). "Oh yea, well so could my (insert name of new big bore 4stroke quad here)" Chances are you're wrong. Without decent motor mods, most quads fall on their faces when they're geared up to run 80mph. A few of the new huge bore 4strokes can probably be geared to run a little over 80 with stock motors (the DS650 and new Raptor come to mind), but I'd put money they couldn't pull speeds that a stock LT500 could. I've ridden a few DS650's -- they're not even close. I haven't ridden a 700Raptor but unless it's power is heads and shoulders above the DS650, it wouldn't win either.
For what it's worth...
Posted by: yagerzzz
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Originally posted by: Raptor660Rshee350
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Originally posted by: TrikeMan05
You also have to consider traction. Thats probably why the Raptor is "winning" the drags. A 500cc 2stroke will spin like crazy. Get some traction and say good bye to Mr. Raptor.
I am going to disagree with that. It is harder to get traction with a 4-stroke than with a 2 beacuse 4-strokes make more torque down low. A 2 stroke makes its power in the mid to high end when its in is powerband.
Are you kidding? TrikeMan hit the nail on the head. First off, no one "lugs" their quad when starting off in a drag. You rev to the moon as much as possible before dropping or slightly feathering the clutch on take off. So the low end torque isn't nearly as much of a factor as high end hp. Case in point, Banshees have virtually no low end, yet they are awsome drag quads because of their high end HP. Second, have you ever ridden a zilla? The torque is amazing. Even if it were a large bore 4 stroke, it's impressive. Third, have you watched many drag races? I've had close drag races on a zilla before and have even lost trying to race lesser 4 strokes in sand due to ridiculous spinning from being way under tired. On asphalt where traction wasn't an issue, it wasn't even a contest with the same quads. Nearly everyone, even 4 stroke enthusiasts, will tell you that most 4 stroke quads need far less tire to hook up good than comparable 2 strokes. Just look at the typical sand tires Banshees and zillas use when drag racing. They're huge! The 4 strokes that are really good drag racers are the multi cylindered crotch rocket hybrids, and they're not good because of their low end torque. They're good from their high reving HP. And look at the size of the tires people run on them! High end HP requires more traction due to spinning.
Posted by: Raptor660Rshee350
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Originally posted by: SJ
One of the Mechanics I work with has a Zilla and he has told me many times he has had it over 100mph when he lived back east. He is the McGyver type of guy. People don't realize that a 500cc 2 Stroke is comparable to a 1000cc 4 Stroke.
The Zilla is the fastest stock quad ever produced. It is tough to compare a 2-stroke to a four beacuse four strokes are made for more low end torque. 2 strokes are made for high end horsepower. If a 500cc 2 stroke was comparable to a 1000 four stroke nothing would be able to keep up with stock Banshees, and stock 250Rs, or any type of 2 stroke and we all know thats not true. If a 1000 four stroke sport quad was ever produced it would be without a doubt the fastest quad on the market. Think about it the new 700R, what if it was a 1000R. If that mechanics Zilla goes over 100 mph it must have some motor work done to it or higer gearing.
Posted by: Raptor660Rshee350
oh ok
Posted by: Raptor660Rshee350
Ive seen DirtWheels tests and other magazine tests. The top speed is in the 77-82 range.
Posted by: Raptor660Rshee350
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Originally posted by: SJ
Raptor660Rshee350, How and the hell do you get to the spark plugs in that Camaro. That engine compartment is STUFFED.
hehe, you need a damn lift.
Posted by: Raptor660Rshee350
With the top speed i was trying to give a ballpark. I have not yet read the new dirtwheels.
Posted by: Raptor660Rshee350
Top speed really doesnt matter where i ride so i dont really care. Who cares about one mph? lol
Posted by: Raptor660Rshee350
An agreement between ATV manufactures was established a few years back saying that an atv can not exceed 80 mph stock. If that agreement was never made sure the 700R and DS650 would proably be getting up to 80. I think a stock Zilla on a good day can hit the 80 mph mark if its properly tuned, but is there really any stock Zillas left today?
Posted by: Raptor660Rshee350
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Originally posted by: raptor6
My raptor is piped amd jetted and I can beat a stock zilla,but I never raced a pipe zilla.
ehh, I dont know about that.
Posted by: Raptor660Rshee350
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Originally posted by: maddog56
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Originally posted by: Sandro
On atv sports latest magazine it has a whole 6 pages the zila and the top speed is 76mph. the pages are from 58 to 63 the top speed is on page 63. its the november mag.
Yep, thanks for confirming my story. Of course I dont think anyone should listen to the magazines for this type of info, but if you are going to cite them you should do it accurately.
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Originally posted by: maddog56
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Originally posted by: Raptor660Rshee350
Ive seen DirtWheels tests and other magazine tests. The top speed is in the 77-82 range.
Really? Because the latest issue of ATV sport did a piece on the old LT250R and LT500R and they said the top speed of the zilla was 76mph, right on the spec sheet.
Page 63 for those of you who have the November issue.
What ever you say Mad Dog lol
Posted by: Raptor660Rshee350
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Originally posted by: TrikeMan05
You also have to consider traction. Thats probably why the Raptor is "winning" the drags. A 500cc 2stroke will spin like crazy. Get some traction and say good bye to Mr. Raptor.
I am going to disagree with that. It is harder to get traction with a 4-stroke than with a 2 beacuse 4-strokes make more torque down low. A 2 stroke makes its power in the mid to high end when its in is powerband.
Posted by: XtremeSkier
whats thet stock top speed then? 80?
Posted by: 03660R
cause they really suck even though they are fast, ever try kicking one over? id take a banshee over a zilla anyday!
Posted by: Steveo10
Acceleration i don't know... but from stock yes it is the fastest quad. Since its a 2stroke, its easy to mod and you could have easy HP gains.
Posted by: speedi
Good points yagerzzz
Posted by: warriorman95
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Originally posted by: rooster123<b> Look at my picture page and tell me what you think.
I think you're real lucky to have them three quads, but if your luck($) ever goes low give me a call and I'd take one of them off you're hands.
I've heard there were some reliablity isues with the Zilla, any truth to that?
Posted by: raptor6
My raptor has no problems with a stock zilla
Posted by: raptor6
My raptor is piped amd jetted and I can beat a stock zilla,but I never raced a pipe zilla.
Posted by: raptor6
Raced 5-7 times in 600ft....me beating him by 3 bikes.
Posted by: raptor6
Maybe you are right or maybe I am just faster.
Posted by: Sparky8370
As for the top speed: Before I got my 89 lt250r I briefly had an 86, my brother was on his 87 with same mods as my 89. We left a pit and my cousin was in his car clocking us. My brother shot ahead of me (I had to shift 1st to 3rd-bad second gear) and my cousin clocked him. He was going 75 on a 250 stock gearing but he had 22s on it. I'm not sure if they came with 20s stock, but my 89 had 20s on it when I got it. I'm pretty sure I remember seeing 22s for rear tires on specs on top of air box. Anyways, it the 250 does 75 then the 500 has to go faster than that.
PS It definetely doesn't take a mile to wind it out. Probably around 1/4 mile.
Posted by: SJ
One of the Mechanics I work with has a Zilla and he has told me many times he has had it over 100mph when he lived back east. He is the McGyver type of guy. People don't realize that a 500cc 2 Stroke is comparable to a 1000cc 4 Stroke.
Posted by: SJ
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Originally posted by: Raptor660Rshee350
Quote
Originally posted by: SJ
One of the Mechanics I work with has a Zilla and he has told me many times he has had it over 100mph when he lived back east. He is the McGyver type of guy. People don't realize that a 500cc 2 Stroke is comparable to a 1000cc 4 Stroke.
The Zilla is the fastest stock quad ever produced. It is tough to compare a 2-stroke to a four beacuse four strokes are made for more low end torque. 2 strokes are made for high end horsepower. If a 500cc 2 stroke was comparable to a 1000 four stroke nothing would be able to keep up with stock Banshees, and stock 250Rs, or any type of 2 stroke and we all know thats not true. If a 1000 four stroke sport quad was ever produced it would be without a doubt the fastest quad on the market. Think about it the new 700R, what if it was a 1000R. If that mechanics Zilla goes over 100 mph it must have some motor work done to it or higer gearing.
I think you misunderstood what I am trying to say. Here is an example. Motorcross bikes. 125cc 2 Strokes race against 250cc 4 Strokes. 250cc 2 Strokes race against 450cc 4 Strokes. No his Zilla was not stock That is why I made the McGyver comment.
Posted by: SJ
Raptor660Rshee350, How and the hell do you get to the spark plugs in that Camaro. That engine compartment is STUFFED.
Posted by: SJ
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Originally posted by: Raptor660Rshee350
Quote
Originally posted by: SJ
Raptor660Rshee350, How and the hell do you get to the spark plugs in that Camaro. That engine compartment is STUFFED.
hehe, you need a damn lift.
I can believe that.
Posted by: Sandro
On atv sports latest magazine it has a whole 6 pages the zila and the top speed is 76mph. the pages are from 58 to 63 the top speed is on page 63. its the november mag.
Posted by: 4wheelinatvrider
Is the zilla the fastest Quad ever?????? Acceleration and top speed
Posted by: 4wheelinatvrider
Why havent they made a updated 1 in the past 18 years???
Posted by: TrikeMan05
You also have to consider traction. Thats probably why the Raptor is "winning" the drags. A 500cc 2stroke will spin like crazy. Get some traction and say good bye to Mr. Raptor.
Posted by: 4FITTY
I had a 87 zilla which was the fastest of the years and mine would go 77 mph flat out on blacktop As far as the quickest NO the 700 raptor will beat it in a drag race but not by much at all I know this because my brother still has my old zilla and it is stock except for a fresh 10 over bore and Hoyt's 700 will beat it every time By the way they are both bone stock except the airbox lid on both I will ask them to race top speed and I will let you know who wins We are also at 600 elevation
Posted by: 4FITTY
power pulses per rpm defines paddle spacing A banshee has 2 power pulses per 360 degrees so then it can handle more paddles because the the rpm in between the power pulses is only 180 degrees rotation of the crank so it has a minimal rpm loss between paddles A 4 stroke has one power pulse per 720 degrees rotation of the crank shaft so you need less paddles Because they will lower the the rpm in between the power pulses and then the motor will have to try and make up for the lost rpm So a 70 hp banshee could use a 12 paddle and a 70 hp raptor needs a 6 paddle to run at its best THESE ARE JUST EXAMPLES
Posted by: hardcoreatv
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Originally posted by: maddog56
Actually the conversion factor is around 1.75:1, meaning that a two stroke is comparable to a four stroke with a displacement 1.75 times larger than its own. When you calculate it you realize the foundation for the original 440cc four stroke limit in racing for the 250 class is based on this.
2 strokes are by far the best they have so much power and speed. Imagine if they made a 700 cc raptor 2 stroke the thing would be insane!
Posted by: hardcoreatv
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Originally posted by: 4FITTY
I had a 87 zilla which was the fastest of the years and mine would go 77 mph flat out on blacktop As far as the quickest NO the 700 raptor will beat it in a drag race but not by much at all I know this because my brother still has my old zilla and it is stock except for a fresh 10 over bore and Hoyt's 700 will beat it every time By the way they are both bone stock except the airbox lid on both I will ask them to race top speed and I will let you know who wins We are also at 600 elevation
Thats a 700 sportbike against a 500 sportbike. If it was a 700 2 stroke say goodbye to the raptor.
